Bad policy on purchasing online with debit card

I am disappointed in the service i received as well as the policies you have in place. i just wish to inform you that i have no problem with the franschhoek branch itself but rather the telephone division. I wanted to post a facebook add today and was blocked from doing the transaction. When asked why it was blocked i was told the website was unsafe. This is a load of ******* as facebook has to be one of the safest websites in the world. It clearly states on facebook that it takes credit and debit cards. My debit card clearly states it is mastercard approved. Now i wish to ask why do you block my transaction. I have phoned in and answered all your security questions. They refuse to help me saying i need to apply for a credit card. That is ridiculous considering i need the transaction completed now to make money. The transaction is being blocked on your side and It is unfair to force me to get a credit card. The reasons you give are that they don't have a security certificate. Quite frankly i don't care what your reasons are, it is my money and if i wish to override your protocol i expect someone to help me. If it was some dingy website i would understand but this is FACEBOOK